Truck storage box



FIG. 1 is a perspective view of a truck storage box according to the present design;

FIG. 2 is a top view therefor;

FIG. 3 is a front view thereof;

FIG. 4 is an end view thereof; the opposite side being a mirror image thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines shown in the figures are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a truck storage box, as shown and described. 